Serving Tuscaloosa Since 1920

Answered: Why is My Air Conditioner Not Cooling the House?

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Is your home still too hot and muggy, even with the AC on full blast? We often hear homeowners complain that their air conditioners are not cooling their homes effectively, but they don’t know why it’s happening or what to do about it. This is frustrating to everyone in the household – and, if left unaddressed, can lead to higher energy bills and costly repairs.

There are a few potential causes of an AC that isn’t cooling enough, and understanding them can help you troubleshoot and fix the problem.

Thermostat Settings Are Wrong

When your AC is running but not keeping your house cool, the problem might be with your thermostat settings. Here’s how you can check whether this is a thermostat problem:

  1. Check that your thermostat is set to COOL.
  2. If you begin to feel cool air coming from your vents, then you should be fine.
  3. However, if there’s no difference, you should completely shut your system off and turn it back on again. Then set it to COOL and see if that helps.

You might also need to change some other settings, like how often the AC comes on and how long it stays on. Experiment with different settings until you find one that works for you and keeps your house cool.

If nothing is working, you have another problem on your hands.

Dirty Air Filters

Many people don’t realize that their dirty air filters are the cause of their cooling problems. When your air filter is clogged, it restricts how much cool air is being pushed into your house. This can cause your AC unit to work harder and can even lead to it breaking down.

To fix this issue, all you need to do is check your air filters. If they’re dirty, then replace them! By changing your air filters regularly, you can avoid many cooling problems and save yourself time, money, and frustration.

Leaking Refrigerant

Refrigerant is the fluid that helps your AC unit extract heat from the air. If your AC isn’t cooling your house and you already checked the thermostat and air filters, you may have a refrigerant leak problem. Aside from ineffective cooling, some signs of a refrigerant leak include hissing sounds coming from your air conditioner or a frozen evaporator coil.

If you think you may have a refrigerant leak, call an HVAC specialist right away. Leaking refrigerant can cause your AC unit to work less efficiently and can damage it. By calling your local AC company, they can send a technician to inspect your AC unit and get it running back to normal.

Clogged Condenser Coil

Your AC may not be cooling your house because of a clogged condenser coil. This is a common problem, especially during the summer, and can be easily fixed.

A condenser coil is the part of your AC that cools the air before it’s distributed throughout your house. If it becomes clogged with dirt, dust, or other debris, it can’t do its job properly, and your AC won’t be able to cool your house.

The best way to fix this problem is to clean the coil yourself or have a professional do it for you. If cleaning the coil doesn’t solve the problem, you should call an HVAC technician for help.

Frozen Evaporator Coil

The evaporator coil is a series of coils found inside the air handler. These coils are responsible for cooling the air as it passes over them before being delivered to your home. If the evaporator coil becomes frozen, it will not be able to cool the air, which can cause your home’s temperature to become uncomfortable and could lead to further damage.

There are several signs that can indicate that your evaporator coil is frozen:

  • Random increase in energy bills
  • Insufficient cooling
  • Frost on the copper refrigerant tubing
  • Increased condensate drainage

You should completely shut off your AC unit if you notice these symptoms. By running your AC with a frozen evaporator coil, you risk extensive damage to your system. You can also call an HVAC professional to ensure that you don’t continue to run into this problem with your system.

Air Duct Leak

Air duct leaks can be caused by a few different things. Improper installation is often the culprit, as is damage caused by rodents or other pests. Air ducts can also slowly develop leaks over time due to regular wear and tear from aging materials and temperature fluctuations.

If your home isn’t being cooled properly, you should get your air ducts inspected by a professional. They’ll be able to find the leak and repair it so your house can be cool all summer long.

Contact Banks Quarles for AC Repair

If you are dealing with an air conditioner that just won’t cool no matter what you do, call the HVAC professionals at Banks Quarles. We’ve been providing top-quality AC repair services in Tuscaloosa, AL for more than 100 years.

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